As of 3:33 PM EDT on June 29, 2025, out of 3 cities in Alger County, MI in our database, 1 city (33%) have a UV Index reading of Very High, 1 city (33%) have a UV Index reading of Moderate, while 1 city (33%) have a UV Index reading of High. The city with the highest UV Index reading right now is Munising, MI with a reading of 7.8.
Over the next 24 hours, the highest UV Index reading in Alger County, MI is expected to be 8.5 in Chatham between 2:00 PM - 3:00 PM EDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |